[EM] Score DSV

Markus Schulze markus.schulze at alumni.tu-berlin.de
Sat Aug 29 13:36:41 PDT 2009


Hallo,

it seems to me that Score DSV does not satisfy
monotonicity. It seems to me that the following
scenario is possible:

   Candidate A is the original winner.

   Suppose some voters rank candidate A higher
   without changing the order in which they
   rank the other candidates relatively to
   each other. Then it is possible that some
   other candidate B is kicked out of the Smith
   set and that, after renormalizing the ballots,
   candidate A is worse off.

Markus Schulze





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